Bruner: Tropical American Tetti(;onoidea. 363 



d. Large, tegmiiia basally without a spot. . . Monocerophora Walker. 

 dd. Not so large. Tegmina basally in front provided with a pale 



spot Listrocelis Serville. 



cc. Tegmina and wings abbreviated, lobate, or scale-like. 



d. Legs robust. General color, including the femora, brunneo- 

 ferruginous. 



e. Left mandible of the male greatly lengthened, angulately bent 



at middle [Cuyaba, Matto-Grosso, Brazil]. CarZ/f/Za Karny. 



ee. Left mandible of the male normal, not unusually lengthened 



[Chapada, Brazil] Macromelopon gen. nov. 



dd. Legs very long and slender. General color variable, the femora 

 green or greenish [Colombia] Arachnoscelis Karny. 



Genus Phlugis Stal. 



Phlugis St.\l, Eug. Resa, Orth., p. 324 (i860). 



Pilugis Walker, Cat. Dermapt, Salt. B. M., V, Suppl., p. 15 (1871). 



Thysdrus Stal, Recens. Orth., H, p. 102 (1874), and most authors since. 



The insects which comprise the genus Phlugis with a single exception 

 are found in tropical America. They are small and inconspicuous, 

 being pale testaceous, or greenish, and usually their tegmina are more 

 or less hyaline. Judging from the spined anterior tibiae and femora 

 they may be predaceous in their food habit, using this pair of legs 

 for seizing and holding their prey while devouring it. The diagnostic 

 characters are such as size, venation, comparative length of tegmina 

 and wings, the spines on the anterior and middle femora and tibiae, 

 and the form and arrangement of the various terminal appendages 

 of the male abdomen. Of all of these characters possibly size, spine 

 structure, and the abdominal appendages are most to be relied upon 

 for separating the species. Undoubtedly close and careful collecting 

 over all of tropical South and Central America will bring to light 

 several additional forms. The accompanying synoptic key shows 

 all of the previously described forms together with others now char- 

 acterized as new. 



Synopsis of the Species of Phlugis. 

 A. Tegmina passing beyond the apex of the abdomen. 



b. Ovipositor shorter than the female cerci; male not known [Guatemala, 



French Guiana] infirmiis Saussure & Pictet. 



bh. Ovipositor longer than the female cerci. 



c. Costal area of the tegmina regularly reticulate, the transverse veins 

 parallel. 

 d. Anterior area of tegmina provided with seven to fifteen transverse 

 veins. 



